Ventilator



Patented May 17, 1927.

A.UNIT125D 'HENRY erase; oFAMns, IowA,'AssIcNoR To IOWA s'rnrneorgnneiior AGR-rentrent:

LaNnMncH-nNIc/ams, or'nMEs, iowa, A'eonrofiz'Af'oNlforiowA; `v

-vENrIL-A'ron.

.Application mea Aprn as, 1926.-l seria1-N.v1ds-,i93. A i

This invention relatesfto.improvements in ventilators. Y Y i y e* It isa. well knownvfi'factY that certain amount of ventilation yshould,always befpr'o.

vided for poultry when housed. ina building,

and atfthesameftime the ventilationr should be so established that.excessive currents or drafts'will be eliminated. It is, therefore,essential thataventilator be providedwith means whereby a small amountof ventilation will be provided after the temperature ot the buildinghasdropped .below a predetermined amountland ai'ter the temperature hasbeen raised above a-certain predetermined point allarge amountwoiventilation will then be necessary in order to .pre-

vent overheating of thefbuilding. Y

It isythereforethe,obfect of'my. invention Vto provide, a' .ventilatorhaving means vfor automatically controlling, to a certain eX- tent,theventilation of a building.

More specifically it is the object ot Vmy invention .tol provide adamper Vmechanism -which'vmay be easily andquickly mounted invVentilating lues .of various sizes, and jwhen so mountedvthe saiddamper mechanism will be automatically actuatedthrough a certainpredetermined temperature range, and; will be vlocked in a partiallyclosed `position when the `temperaturefalls below `saidpredeterminedtemperature range, or locked in an open `position, when theLtemperature vmoves above the predetermined temperature mesey, Y

A further Objectis to ,provide a ventilating .mechanism which `isespecially adapted to be used for ventilatingpoultry houses the like. y'e Y My invention consists in `the construction, arrangement y and.combination of the Vvarious parts of theA device, whereby` the objectsvcontemplatedare attainede asehereinafter more fully set forth, pointedVout in my claims, and illustrated in the accompanying drawings, in whichr A A Y. Figure 41 *isy a ysectional view of .a ,fventilatingilue.showingfthemanner in which -my improved device isappliedtherein, afpor* 'tion 'of the ventilating damper being cut away Yw l YFigure 2 is a detailsectional view taken Aony the line 24-2o'Eig-ure 1. Y s Y view of the rdamper Figure 3 is a detail actuatingmechanism which is shown .para

is provided a Ventilating opening 11, said 01m11.111s flucf12."l v, u vY,

lounted within Y the *flue 12 is my im'- proved dampermecl'ianism whichcomprises a shaft 13 pivotally mounted infsuitable bearing members v14,said bearing members being secured tothe inner surface of opposite sidewalls 'of the vlue 12 by means Vof suitable' screws orv nails 15. shaft13Vis a'damper fplate 16,"said plate havingv a body portion 17 which issecured tothe shaft 13 by meansof aclamp 18. Said bodyportion isprovided with an opening 19^at its central portion and has having f anupright Ventilating ,one edgeprovided with a laterally extend :ingportion 20; and the other edge provided with a klaterally extendingportion 21' extending inthe opposite direction; Mounted on the shaft 13'in the opening 19 I have provided.'a-*pinion wheel 22 rigidly secured toysaid shaft.

Pivotally mounted on the shaft 13 is a pair of vder aending supports 23,the lower ends ot `which 'are designed' to carry a Y'thermostat 24.V Thelower endY ofthethervmost'at24 isprovided-with a link A25 for thepurpose of preventing oscillationof the' thermostat, oneend `of the linkbeing` attached tothe` side member of the'ue/12by means of an eyebolt'26lThe thermostat body 24 is vprovided with -a contractile andtendingyoke-28. The parts are so arranged .that theshaft 13` extendsthrough said yoke.

It'A will be seen that as'the' member 27 expands and -contr`acts, theyoke l28 will be elevated and lowered relative to the shaft 13.`

170 Secured to the v 4Oneaol the vertical parallel vmembersofl.mpartwtary m0verifie/1.1i:V teSaidf Shaft jljs the said yoke iselevated or lowered, causing the damper 1.6 to be moved from an open toa closed position, or vice versa. By this construction it will be seenthat the yoke 28 is capable of movement after the tooth 29 has movedupwardly and disengaged the pinion 22, or is capable of further movementafter disengaging the pinion on its downward movement, thereby providingmeans whereby the damper 16 may be actuated only through a certainpredetermined temperature range. The saiddamper is unalfectcd bymovement ofthe yoke when the temperature has varied either above orbelow said predetermined temperature range.

The parts are so constructed and arranged that the damper 16 never movesto a position where the passage in the flue 12 is entirely closed. Thedotted lines in Figure 2 shows the damper moved to a closed position,while the solid lines in said ligure show the damper in its openposition.

For locking the damper in either its open or closed position'at suchtimes when the pinion 22 is not engaged by the tooth 29, I have providedon the hub 30 of the pinion 22 an upwardly projecting arm 31 having onits inner face a lug 32 so arranged that when the said tooth 2S) hasmoved upwardly and kdisengaged the pinion 22, the lug 32 will be rotatedinto alinement with the space between the inner edges of the flanges 33of the yoke 28. The said lug 32 serves to prevent rotation of the arm 31as the yoke 28 is elevated.' The hub 8O is also provided with adownwardly extending arm 34 having' an 'inwardly eXtending lug 35 whichis also designed to pass between the flanges 33 when the said arm 34 hasbeen moved to a vertical position by the downward movement of the yoke28, and at the time the tooth 29 disengages the pinion 22, so that thesaid damper 16 is retained in its closed position as the said yoke 28vis lowered below the predetermined temperature range. One of theflanges 33 is made shorter than the other so that the ends of the longerone of said flanges will serve as stops to limit the inward movement ofthe lugs 31 and 35 and to aline said lugs with the space between theflanges. The arm 31 serves to lock the damper in an open position as theyoke is moved upwardly above the predetermined temperature range.

Thus it will be seen that I have rovided a ventilating mechanism whichmay e easily and quickly applied to the interior of a ventilating `flue,and when so applied will actuate the controlling damper through acertain predetermined temperature range, and any further variation ofthe damper controlling mechanism will be ineffective, as far as theoperation of said damper is concerned, thus providing means whereby thedamper `may be moved to a partially closed position when the temperaturehas reached the lower I limit of the predetermined temperature range andwill be locke-d in the said closed position, providing means whereby thebuilding will be insured of a certain amount of ventilation, sufficientto keep the building supplied with the proper amount of fresh air.

It will be seen that after the temperature has reached the upper limitof the Apredetermined temperature range, lthe damper will be moved to anopen position and locke-d therein, permitting the maximum amount ofventilation for cooling the building.

One of the advantages of my improved mechanism lies in the fact that thedamper controlling mechanism is of a very compact form, which may beentirely assembled in the vfactory and 'which' may be easily and quicklyapplied to a ventilator flue by securing the bearing members 14 inposition by means of the screws 15 and mounting the link 25, which'inactual practice is simply a small rod or wire which may be easily andquickly cut in the desired length, in they eye bolt 26.

I cla-im as my invention:

1. In combination, a building having an upright Ventilating flue, adamper for opening and closing said flue, a temperature controlledmechanism, means actuated by said temperature controlled mechanism forlmoving said damper from a partially closed position to an open position,or vice versa, through a certain predetermined temperature range, meansfor locking said damper in its open position at times when thetemperature rises above said predetermined temperature rang-e and forlocking said damper in its partially closed position at times when thetemperature falls below said predetermined temperature range.

2. A Ventilating device comprising a rotatively mounted shaft, a damperrigidly secured to said shaft having a central opening, a thermostatpivotally mounted to saidV shaft and depending through said opening,

a pinion gear securedvr to the centrall portion of said shaft, a yokemember operatively connected with said thermostat and adapted to movetransversely relative to said shaftv and said pinion, said yoke beingprovided with a tooth designed' to engage lsaid pinion and to impartrotary movement to said shaft during a portion of the movement of saidyoke, and means for locking said shaft against rotary movement at suchtimes when the tooth is out of engagement with said pinion.

3. A ventilating device comprising a rotatively mounted shaft, a damperrigidly secured to said shaft having a central opening, a thermostatpivotally mounted to said shaft and depending through said opening, apinion Vgear secured to the central portion of said shaft, a yoke memberoperatively connected with said thermostat and adapted to movetransversely relative to said shaft and said pinion, said yoke beingprovided with, a tooth designed to engagev said pinion and to impartrotary movement to said shaft during a portion of the movement of' saidyoke, means for lockingk said shaft against rotary movement 'at Suchtimes when the tooth is out of engagement with said pinion, and meansfor detaohably and pivotally mounting said Shaft within a Ventilatingflue.

4. A Ventilating device having a ventilating opening, means for closingsaid Ventilating opening, mea-ns for actuatingsaid closing means as lthetemperature Varies between two predetermined points, means for retainingsaid closing means in an open position when the temperature yriseslaloovesaid predeter-y mined points, and means for retaining saidclosing means in a closed position when the temperature'falls below Saidpredetermined 20 points.V v e Des Moines, Iowa, January 21, 1926.

HENRY GIESE,

